Medical devices
US10639002B2 · kind B2 · utility
0Cited by
255References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2013 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Jun 11, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3925
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An embryo transfer catheter or other medical device has a shaft extruded with two layers. The outer layer is relatively thick and contains gas bubbles sufficient to increase the visibility of the catheter under ultrasound observation but with a density that allows material within the catheter to be viewed by the eye. The inner layer is relatively thin and is free of bubbles so that it provides a smooth bore to the catheter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.